diff options
Diffstat (limited to 'target/linux/brcm2708/patches-4.14/950-0271-net-lan78xx-Add-support-for-VLAN-tag-stripping.patch')
| -rw-r--r-- | target/linux/brcm2708/patches-4.14/950-0271-net-lan78xx-Add-support-for-VLAN-tag-stripping.patch | 82 |
1 files changed, 82 insertions, 0 deletions
diff --git a/target/linux/brcm2708/patches-4.14/950-0271-net-lan78xx-Add-support-for-VLAN-tag-stripping.patch b/target/linux/brcm2708/patches-4.14/950-0271-net-lan78xx-Add-support-for-VLAN-tag-stripping.patch new file mode 100644 index 0000000000..e1e5500cbc --- /dev/null +++ b/target/linux/brcm2708/patches-4.14/950-0271-net-lan78xx-Add-support-for-VLAN-tag-stripping.patch @@ -0,0 +1,82 @@ +From 9d4c65d0e7ebfe20bd24e65d52b1df56e90d498e Mon Sep 17 00:00:00 2001 +From: Dave Stevenson <dave.stevenson@raspberrypi.org> +Date: Tue, 10 Apr 2018 15:27:51 +0100 +Subject: [PATCH 271/454] net: lan78xx: Add support for VLAN tag stripping. + +The chip supports stripping the VLAN tag and reporting it +in metadata. Implement this as it also appears to solve the +issues observed in checksum computation. + +See #2458. + +Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.org> +--- + drivers/net/usb/lan78xx.c | 22 ++++++++++++++++++++++ + 1 file changed, 22 insertions(+) + +--- a/drivers/net/usb/lan78xx.c ++++ b/drivers/net/usb/lan78xx.c +@@ -64,6 +64,7 @@ + #define DEFAULT_RX_CSUM_ENABLE (true) + #define DEFAULT_TSO_CSUM_ENABLE (true) + #define DEFAULT_VLAN_FILTER_ENABLE (true) ++#define DEFAULT_VLAN_RX_OFFLOAD (true) + #define TX_OVERHEAD (8) + #define RXW_PADDING 2 + +@@ -2275,6 +2276,11 @@ static int lan78xx_set_features(struct n + pdata->rfe_ctl &= ~(RFE_CTL_ICMP_COE_ | RFE_CTL_IGMP_COE_); + } + ++ if (features & NETIF_F_HW_VLAN_CTAG_RX) ++ pdata->rfe_ctl |= RFE_CTL_VLAN_STRIP_; ++ else ++ pdata->rfe_ctl &= ~RFE_CTL_VLAN_STRIP_; ++ + if (features & NETIF_F_HW_VLAN_CTAG_FILTER) + pdata->rfe_ctl |= RFE_CTL_VLAN_FILTER_; + else +@@ -2888,6 +2894,9 @@ static int lan78xx_bind(struct lan78xx_n + if (DEFAULT_TSO_CSUM_ENABLE) + dev->net->features |= NETIF_F_TSO | NETIF_F_TSO6 | NETIF_F_SG; + ++ if (DEFAULT_VLAN_RX_OFFLOAD) ++ dev->net->features |= NETIF_F_HW_VLAN_CTAG_RX; ++ + if (DEFAULT_VLAN_FILTER_ENABLE) + dev->net->features |= NETIF_F_HW_VLAN_CTAG_FILTER; + +@@ -2968,6 +2977,16 @@ static void lan78xx_rx_csum_offload(stru + } + } + ++static void lan78xx_rx_vlan_offload(struct lan78xx_net *dev, ++ struct sk_buff *skb, ++ u32 rx_cmd_a, u32 rx_cmd_b) ++{ ++ if ((dev->net->features & NETIF_F_HW_VLAN_CTAG_RX) && ++ (rx_cmd_a & RX_CMD_A_FVTG_)) ++ __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), ++ (rx_cmd_b & 0xffff)); ++} ++ + static void lan78xx_skb_return(struct lan78xx_net *dev, struct sk_buff *skb) + { + int status; +@@ -3032,6 +3051,8 @@ static int lan78xx_rx(struct lan78xx_net + if (skb->len == size) { + lan78xx_rx_csum_offload(dev, skb, + rx_cmd_a, rx_cmd_b); ++ lan78xx_rx_vlan_offload(dev, skb, ++ rx_cmd_a, rx_cmd_b); + + skb_trim(skb, skb->len - 4); /* remove fcs */ + skb->truesize = size + sizeof(struct sk_buff); +@@ -3050,6 +3071,7 @@ static int lan78xx_rx(struct lan78xx_net + skb_set_tail_pointer(skb2, size); + + lan78xx_rx_csum_offload(dev, skb2, rx_cmd_a, rx_cmd_b); ++ lan78xx_rx_vlan_offload(dev, skb2, rx_cmd_a, rx_cmd_b); + + skb_trim(skb2, skb2->len - 4); /* remove fcs */ + skb2->truesize = size + sizeof(struct sk_buff); |